3Times charge on Invoice

I received an email from Nikki Hattingh stating that i would need to pay customs 500.00 to clear and receive my parcel but yestrday again from Dawn Wing-Michelle Queior invoiced me 924.97 for the same parcel. i had agreed to the 500.00 amount to clear and receive my parcel from Dawn wing and im not willing to pay anymore. Please have my parcel delivered to me before end of day tomorrow an i am not to blame for the incorrect advised amount.